Due to the fact that the iTunes version of the Starbound Orchestral OST was originally finalized prior to the soundtrack being finished, I have made available my "missing" tracks that are on the full version of the OST below:
I Was the Sun (Before it was Cool)
Starbound
These are 320 Kbps MP3 files, the same or better as what iTunes, Google Play, Loudr, etc. allow-- note that the Bandcamp version of the OST is the only version to allow WAV/FLAC/OGG version and has been complete since uploading.
I am working with my distribution provider to update the Starbound OST with the full tracklist.